申请人:ALZA CORPORATION
公开号:EP0316065A2
公开(公告)日:1989-05-17
A diffusional drug delivery device is described which can provide for stability of the adhesive and system components, elimination of the initial burst of drug and hence irritation, and to provide for delayed onset of therapeutic effect along with delivery of a therapeutic agent at an optimum rate. The therapeutic agent in a first form which is suitable for storage, and the anhydrous activating means are inert when in an anhydrous environment. Moisture activates the system whereby the activating means provides an acidic or basic solution and the first form of the therapeutic agent is converted to a second form which is suitable for absorption through the skin or mucosa.
本文描述了一种扩散式给药装置,该装置可以保证粘合剂和系统组件的稳定性,消除药物的初始迸发,从而消除刺激,并在以最佳速率输送治疗剂的同时延缓治疗效果的开始。在无水环境中,适合储存的第一种形式的治疗剂和无水活化装置是惰性的。水分可激活该系统,从而使活化装置提供酸性或碱性溶液,并将第一种形式的治疗剂转化为适合通过皮肤或粘膜吸收的第二种形式。